使い捨てプラスチックの規制
Some people say that the government should ban single-use plastic products, such as plastic bags and straws. Do you agree with this opinion?
こう聞かれることもある
- Should stores be required to charge for plastic bags?
- Some people think banning plastic straws will not solve environmental problems. Do you agree or disagree?
- What can be done to reduce the amount of plastic waste in the ocean?
- TOPIC: Single-use plastic products should be banned in restaurants and stores.
賛成で使える論点
海洋汚染の削減環境
Banning single-use plastics reduces the amount of plastic waste that ends up polluting the ocean.
使える表現
- reduce plastic waste in the ocean
- protect marine life
- prevent plastic from entering rivers and seas
ビニール袋やストローが海に流れ着き、ウミガメや魚が誤って食べてしまうという具体例
Sea turtles and fish often mistake plastic bags and straws for food, which can injure or kill them.
消費者の意識改革効率
A ban encourages people to change their daily habits and rely on reusable items instead of disposable ones.
使える表現
- encourage reusable alternatives
- change daily habits
- reduce unnecessary waste
レジ袋が有料化されてから、マイバッグを持ち歩く人が増えたという具体例
Since stores began charging for plastic bags, many people have started carrying reusable bags instead.
ごみ処理コストの削減お金
Reducing single-use plastic lowers the cost of collecting and processing waste for local governments.
使える表現
- lower waste management costs
- reduce the burden on local governments
- decrease the volume of garbage collected
自治体がごみ処理にかける費用が、プラスチックごみの減少によって抑えられるという具体例
When cities collect less plastic waste, they can spend less money on collection and processing, freeing up funds for other public services.
代替素材産業の成長お金
A ban on plastic can encourage the growth of industries that produce biodegradable or reusable alternatives.
使える表現
- encourage new industries
- create demand for biodegradable materials
- support sustainable businesses
紙ストローや生分解性の容器を作る企業に新しいビジネスチャンスが生まれるという具体例
Companies that produce paper straws or biodegradable containers have grown quickly as demand for plastic alternatives has increased.
反対で使える論点
代替品にも環境負荷がある環境
Alternatives to plastic, such as paper or cotton products, can require more energy and water to produce.
使える表現
- require more energy to produce
- have a hidden environmental cost
- not necessarily be better for the planet
紙袋やコットンバッグの製造には、プラスチック袋より多くの水や資源が必要になるという具体例
Studies have shown that producing a single cotton bag can require far more water and energy than producing a plastic bag, so the switch is not automatically better for the environment.
低所得層への負担増公平さ
Charging for plastic bags or banning cheap disposable products places an extra financial burden on low-income households.
使える表現
- place a financial burden on households
- raise the cost of everyday shopping
- affect low-income families the most
レジ袋や使い捨て容器の有料化が、日々の買い物のコストを底上げしてしまうという具体例
For a family already managing a tight budget, paying extra for a bag every time they shop can add up to a noticeable expense over a year.
根本原因はごみ処理の仕組み効率
The real problem is often poor waste management, not the material itself; even banned items can end up as litter if disposal systems are weak.
使える表現
- address the root cause of pollution
- improve waste management systems
- fail to solve the problem at its source
プラスチックを禁止しても、ごみの分別・回収の仕組みが弱ければ結局ポイ捨ては減らないという具体例
In areas without a proper waste collection system, banning plastic bags does not stop littering; people simply litter with whatever alternative they are given.
医療・衛生用途での必要性安全
Some single-use plastic products, such as medical gloves or syringes, are essential for hygiene and cannot easily be replaced.
使える表現
- be essential for hygiene
- protect against infection
- be difficult to replace safely
使い捨ての医療用手袋や注射器は衛生上必要で、一律に禁止すると医療現場が困るという具体例
A hospital cannot safely reuse disposable syringes or gloves, so a blanket ban on single-use plastic would create serious problems in medical settings.
どの2つを選ぶか
賛成なら「海洋汚染の削減」と「消費者の意識改革」——環境への直接的な効果と、行動変容という2段構えで説得力が出る。反対なら「代替品にも環境負荷がある」と「根本原因はごみ処理の仕組み」——どちらも規制だけでは解決しないという同じ論理でつながる。
やりがちな失敗
- 「プラスチックは悪いもの」という前提だけで、規制の効果自体を検証しない
- 海洋汚染の写真的なイメージ（ウミガメ等）だけに頼り、経済的な影響に触れない
- 規制に賛成なのに医療用途など例外の必要性を無視して「全面禁止」を主張してしまう
- plastic bag / plastic straw / single-use plasticsの語を無自覚に混同する（具体例ではどれの話か明示する）
モデル解答
英検2級版を見る（80 words）
I agree that the government should ban single-use plastic products such as bags and straws. First, this would reduce the amount of plastic waste that pollutes the ocean. For example, sea turtles and fish often mistake plastic for food and get hurt. Second, a ban would encourage people to use reusable items instead. Since stores started charging for plastic bags, more people now carry their own bags. For these reasons, I believe banning single-use plastic products is a good idea.
なぜこの構成になるか
- 第1文で立場を明言する
- 理由1「海洋汚染の削減」→ For exampleで生き物への影響を具体化
- 理由2「消費者の意識改革」→ Sinceで実際に起きた行動変容を書く
- 最終文は主張を言い換えて締める
英検準1級版を見る（126 words）
I disagree that the government should ban all single-use plastic products, although I understand the environmental concerns behind this idea. To begin with, alternatives such as paper or cotton bags are not automatically better for the environment; producing a single cotton bag can require far more water and energy than producing a plastic one. In addition, some single-use plastic items, such as medical gloves and syringes, are essential for hygiene and cannot easily be replaced without risking safety. Admittedly, plastic waste is a serious problem, particularly in the ocean. However, the real solution may lie in improving waste management systems rather than banning the material itself, since litter continues wherever collection systems are weak. For these reasons, a complete ban is not necessarily the best approach.
なぜこの構成になるか
- 「although ～」で環境への懸念自体は認めつつ反対の立場を明確にする
- 理由1「代替品の環境負荷」→ 数値的な比較（cotton vs plastic）で具体性を出す
- 理由2「医療用途での必要性」→ cannot easily be replaced without risking safetyで例外の存在を明示する
- "Admittedly, ～. However, ～"の譲歩構文で環境問題自体は否定しない姿勢を示す
- 最終文はnot necessarily the best approachと断定を避けた表現で締め、論理的な柔らかさを出す（準1級で評価されやすい）
次の一手
ここで作った論点は、まだ「材料」です。実際にこの言葉を使って80〜100語の英文を書いたら、 AI添削ツールや先生に見せて、文法・語彙・語数を仕上げてください。理由が思いつかずに手が止まっていた人ほど、材料さえあれば添削は驚くほどスムーズに進みます。
